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ETSI TS 125 413 V5.12.0 (2005-06)Technical Specification

Universal Mobile Telecommunications System (UMTS);UTRAN Iu interface Radio Access Network

Application Part (RANAP) signalling(3GPP TS 25.413 version 5.12.0 Release 5)

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ETSI TS 125 413 V5.12.0 (2005-06)13GPP TS 25.413 version 5.12.0 Release 5

ReferenceRTS/TSGR-0325413v5c0

KeywordsUMTS

ETSI

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Intellectual Property RightsIPRs essential or potentially essential to the present document may have been declared to ETSI. The informationpertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members , and can be found

in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI inrespect of ETSI standards" , which is available from the ETSI Secretariat. Latest updates are available on the ETSI Webserver ( http://webapp.etsi.org/IPR/home.asp ).

Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guaranteecan be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Webserver) which are, or may be, or may become, essential to the present document.

ForewordThis Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).

The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities orGSM identities. These should be interpreted as being references to the corresponding ETSI deliverables.

The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found underhttp://webapp.etsi.org/key/queryform.asp .
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Contents

Intellectual Property Rights................................................................................................................................2

Foreword.............................................................................................................................................................2 Foreword...........................................................................................................................................................10

1 Scope ......................................................................................................................................................11

2 References ..............................................................................................................................................11

3 Definitions, symbols and abbreviations .................................................................................................12 3.1 Definitions........................................................................................................................................................12 3.2 Symbols............................................................................................................................................................14 3.3 Abbreviations ................................................................ ....................................................... ............................14

4 General ...................................................................................................................................................15 4.1 Procedure Specification Principles .................................................................... ...............................................15 4.2 Forwards and Backwards Compatibility ...................................................................... ....................................16 4.3 Specification Notations .............................................................. ............................................................ ..........16

5 RANAP Services....................................................................................................................................16

6 Services Expected from Signalling Transport........................................................................................16

7 Functions of RANAP .............................................................................................................................17

8 RANAP Procedures................................................................................................................................18 8.1 Elementary Procedures..... ............................................................ .......................................................... ..........18 8.2 RAB Assignment................................................. .................................................... .........................................19 8.2.1 General........................................................................................................................................................19 8.2.2 Successful Operation ..................................................................... ................................................... ..........20

8.2.2.1 Successful Operation for GERAN Iu-mode ........................................................ ..................................25 8.2.3 Unsuccessful Operation ............................................................... ...................................................... .........25 8.2.4 Abnormal Conditions............................... ............................................................ .......................................25 8.3 RAB Release Request .............................................. .................................................... ....................................26 8.3.1 General........................................................................................................................................................26 8.3.2 Successful Operation ..................................................................... ................................................... ..........26 8.3.3 Abnormal Conditions............................... ............................................................ .......................................27 8.4 Iu Release Request ..................................................... .......................................................... ............................27 8.4.1 General........................................................................................................................................................27 8.4.2 Successful Operation ..................................................................... ................................................... ..........27 8.4.3 Abnormal Conditions............................... ............................................................ .......................................27 8.5 Iu Release ........................................................ ............................................................ .....................................27 8.5.1 General........................................................................................................................................................27 8.5.2 Successful Operation ..................................................................... ................................................... ..........28 8.5.3 Abnormal Conditions............................... ............................................................ .......................................28 8.6 Relocation Preparation ........................................................ .......................................................... ...................29 8.6.1 General........................................................................................................................................................29 8.6.2 Successful Operation ..................................................................... ................................................... ..........29 8.6.2.1 Successful Operation for GERAN Iu-mode ........................................................ ..................................31 8.6.3 Unsuccessful Operation ............................................................... ...................................................... .........31 8.6.4 Abnormal Conditions............................... ............................................................ .......................................32 8.6.5 Co-ordination of Two Iu Signalling Connections................................................................ .......................32 8.7 Relocation Resource Allocation ..................................................................... ..................................................33 8.7.1 General........................................................................................................................................................33 8.7.2 Successful Operation ..................................................................... ................................................... ..........33 8.7.2.1 Successful Operation for GERAN Iu-mode ........................................................ ..................................36 8.7.3 Unsuccessful Operation ............................................................... ...................................................... .........37 8.7.3.1 Unsuccessful Operation for GERAN Iu-mode............. .................................................... .....................38 8.7.4 Abnormal Conditions............................... ............................................................ .......................................38 8.7.5 Co-ordination of Two Iu Signalling Connections................................................................ .......................38

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8.8 Relocation Detect ............................................................ .............................................................. ...................39 8.8.1 General........................................................................................................................................................39 8.8.2 Successful Operation ..................................................................... ................................................... ..........39 8.8.3 Abnormal Conditions............................... ............................................................ .......................................39 8.8.4 Co-ordination of Two Iu Signalling Connections................................................................ .......................39 8.9 Relocation Complete ............................................................ ......................................................... ...................40

8.9.1 General........................................................................................................................................................40 8.9.2 Successful Operation ..................................................................... ................................................... ..........40 8.9.3 Abnormal Conditions............................... ............................................................ .......................................40 8.9.4 Co-ordination of Two Iu Signalling Connections................................................................ .......................40 8.10 Relocation Cancel.............................................................. ............................................................ ...................40 8.10.1 General........................................................................................................................................................40 8.10.2 Successful Operation ................................................................. ....................................................... ..........41 8.10.3 Unsuccessful Operation ........................................................... ......................................................... ..........41 8.10.4 Abnormal Conditions................................. ............................................................ .....................................41 8.10.5 Co-ordination of Two Iu Signalling Connections........................................................... ............................41 8.11 SRNS Context Transfer..................................................................... ..................................................... ..........41 8.11.1 General........................................................................................................................................................41 8.11.2 Successful Operation ................................................................. ....................................................... ..........42 8.11.3 Unsuccessful Operation ........................................................... ......................................................... ..........42 8.11.4 Abnormal Conditions................................. ............................................................ .....................................42 8.12 SRNS Data Forwarding Initiation ................................................................... .................................................42 8.12.1 General........................................................................................................................................................42 8.12.2 Successful Operation ................................................................. ....................................................... ..........43 8.12.3 Abnormal Conditions................................. ............................................................ .....................................43 8.13 SRNS Context Forwarding from Source RNC to CN .......................................................... ............................43 8.13.1 General........................................................................................................................................................43 8.13.2 Successful Operation ................................................................. ....................................................... ..........43 8.13.3 Abnormal Conditions................................. ............................................................ .....................................44 8.14 SRNS Context Forwarding to Target RNC from CN........................................................ ...............................44 8.14.1 General........................................................................................................................................................44 8.14.2 Successful Operation ................................................................. ....................................................... ..........44 8.14.3 Abnormal Conditions................................. ............................................................ .....................................44 8.15 Paging...............................................................................................................................................................45 8.15.1 General........................................................................................................................................................45 8.15.2 Successful Operation ................................................................. ....................................................... ..........45 8.15.3 Abnormal Conditions................................. ............................................................ .....................................46 8.16 Common ID........................................................ ....................................................... .......................................46 8.16.1 General........................................................................................................................................................46 8.16.2 Successful Operation ................................................................. ....................................................... ..........46 8.16.3 Abnormal Conditions................................. ............................................................ .....................................46 8.17 CN Invoke Trace ................................................ ........................................................ ......................................47 8.17.1 General........................................................................................................................................................47 8.17.2 Successful Operation ................................................................. ....................................................... ..........47 8.17.3 Abnormal Conditions................................. ............................................................ .....................................47 8.18 Security Mode Control ........................................................ ........................................................... ..................47 8.18.1 General........................................................................................................................................................47 8.18.2 Successful Operation ................................................................. ....................................................... ..........48 8.18.3 Unsuccessful Operation ........................................................... ......................................................... ..........49 8.18.4 Abnormal Conditions................................. ............................................................ .....................................49 8.19 Location Reporting Control...................................... ........................................................ ................................49 8.19.1 General........................................................................................................................................................49 8.19.2 Successful Operation ................................................................. ....................................................... ..........50 8.19.3 Abnormal Conditions................................. ............................................................ .....................................51 8.20 Location Report............ ....................................................... ........................................................... ..................51 8.20.1 General........................................................................................................................................................51 8.20.2 Successful Operation ................................................................. ....................................................... ..........51 8.20.3 Abnormal Conditions................................. ............................................................ .....................................52 8.21 Data Volume Report................................ ....................................................... ..................................................52 8.21.1 General........................................................................................................................................................52 8.21.2 Successful Operation ................................................................. ....................................................... ..........52 8.21.3 Unsuccessful Operation ........................................................... ......................................................... ..........53

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8.21.4 Abnormal Conditions................................. ............................................................ .....................................53 8.22 Initial UE Message .......................................................... .............................................................. ...................53 8.22.1 General........................................................................................................................................................53 8.22.2 Successful Operation ................................................................. ....................................................... ..........53 8.22.2.1 Successful Operation for GERAN Iu-mode .................................................... ......................................54 8.23 Direct Transfer ........................................................... .......................................................... ............................54

8.23.1 General........................................................................................................................................................54 8.23.2 Successful Operation ................................................................. ....................................................... ..........54 8.23.2.1 CN Originated Direct Transfer..................... ................................................................ .........................54 8.23.2.2 UTRAN Originated Direct Transfer ................................................................. ....................................55 8.23.3 Abnormal Conditions................................. ............................................................ .....................................55 8.24 Void..................................................................................................................................................................55 8.25 Overload Control... ....................................................... ......................................................... ...........................55 8.25.1 General........................................................................................................................................................55 8.25.2 Philosophy .............................................. .................................................... ................................................56 8.25.3 Successful Operation ................................................................. ....................................................... ..........56 8.25.3.1 Overload at the CN............................................................... ....................................................... ..........56 8.25.3.2 Overload at the UTRAN .......................................................... ................................................... ..........56 8.25.4 Abnormal Conditions................................. ............................................................ .....................................57 8.26 Reset........................................................ ....................................................... ..................................................57 8.26.1 General........................................................................................................................................................57 8.26.2 Successful Operation ................................................................. ....................................................... ..........57 8.26.2.1 Reset Procedure Initiated from the CN ......................................................... ........................................57 8.26.2.2 Reset Procedure Initiated from the UTRAN .......................................................... ...............................58 8.26.3 Abnormal Conditions................................. ............................................................ .....................................58 8.26.3.1 Abnormal Condition at the CN ............................................................... ..............................................58 8.26.3.2 Abnormal Condition at the UTRAN ................................................................. ....................................58 8.26.3.3 Crossing of Reset Messages....................... ........................................................ ...................................58 8.27 Error Indication ................................................. ....................................................... ........................................59 8.27.1 General........................................................................................................................................................59 8.27.2 Successful Operation ................................................................. ....................................................... ..........59 8.27.3 Abnormal Conditions................................. ............................................................ .....................................59 8.28 CN Deactivate Trace ........................................................ ............................................................. ...................60 8.28.1 General........................................................................................................................................................60 8.28.2 Successful Operation ................................................................. ....................................................... ..........60 8.28.3 Abnormal Conditions................................. ............................................................ .....................................60 8.29 Reset Resource ............................................................ ......................................................... ............................60 8.29.1 General........................................................................................................................................................60 8.29.1.1 Reset Resource procedure initiated from the RNC ............................................................ ...................60 8.29.1.2 Reset Resource procedure initiated from the CN............................................................... ...................60 8.29.2 Successful Operation ................................................................. ....................................................... ..........61 8.29.2.1 Reset Resource procedure initiated from the RNC ............................................................ ...................61 8.29.2.2 Reset Resource procedure initiated from the CN............................................................... ...................61 8.30 RAB Modification Request .................................................. .......................................................... ..................62 8.30.1 General........................................................................................................................................................62 8.30.2 Successful Operation ................................................................. ....................................................... ..........62 8.30.3 Abnormal Conditions................................. ............................................................ .....................................62 8.31 Location Related Data .............................................................. .............................................................. ..........62 8.31.1 General........................................................................................................................................................62 8.31.2 Successful Operation ................................................................. ....................................................... ..........63 8.31.2.1 Successful Operation for GERAN Iu mode ......................................................... .................................63 8.31.3 Unsuccessful Operation ........................................................... ......................................................... ..........64 8.31.4 Abnormal Conditions................................. ............................................................ .....................................64 8.31.4.1 Abnormal Conditions for GERAN Iu mode................................................... .......................................64 8.32 Information Transfer ................................................... ......................................................... ............................64 8.32.1 General........................................................................................................................................................64 8.32.2 Successful Operation ................................................................. ....................................................... ..........65 8.32.3 Unsuccessful Operation ........................................................... ......................................................... ..........66 8.32.4 Abnormal Conditions................................. ............................................................ .....................................66 8.33 UE Specific Information .................................................... ........................................................... ...................66 8.33.1 General........................................................................................................................................................66 8.33.2 Successful Operation ................................................................. ....................................................... ..........66

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9 Elements for RANAP Communication ..................................................................................................67 9.1 Message Functional Definition and Content .................................................................................. ..................67 9.1.1 General........................................................................................................................................................67 9.1.2 Message Contents ..................................................... ....................................................... ...........................68 9.1.2.1 Presence ..................................................... .......................................................... .................................68 9.1.2.2 Criticality .............................................................. ............................................................. ...................68 9.1.2.3 Range ................................................ ....................................................... .............................................68 9.1.2.4 Assigned Criticality........................... ................................................................. ...................................68 9.1.3 RAB ASSIGNMENT REQUEST....................................... ................................................................ ........68 9.1.4 RAB ASSIGNMENT RESPONSE....................................... .............................................................. ........70 9.1.5 RAB RELEASE REQUEST..................................................... ......................................................... .........72 9.1.6 IU RELEASE REQUEST............ ................................................................. ..............................................72 9.1.7 IU RELEASE COMMAND ................................................................. ...................................................... 73 9.1.8 IU RELEASE COMPLETE................................. ............................................................ ...........................73 9.1.9 RELOCATION REQUIRED.............. ............................................................ ............................................74 9.1.10 RELOCATION REQUEST .................................................... ........................................................... .........74 9.1.11 RELOCATION REQUEST ACKNOWLEDGE ..................................................................... ...................76 9.1.12 RELOCATION COMMAND.................................................... ........................................................ .........77 9.1.13 RELOCATION DETECT.................................... ........................................................ ...............................77 9.1.14 RELOCATION COMPLETE.................................................. .......................................................... .........78 9.1.15 RELOCATION PREPARATION FAILURE................... ............................................................ ..............78 9.1.16 RELOCATION FAILURE ........................................................... ..................................................... .........78 9.1.17 RELOCATION CANCEL................................................. ........................................................ .................78 9.1.18 RELOCATION CANCEL ACKNOWLEDGE ..................................................................... .....................79 9.1.19 SRNS CONTEXT REQUEST........................................................................... .........................................79 9.1.20 SRNS CONTEXT RESPONSE................................................................... ...............................................79 9.1.21 SRNS DATA FORWARD COMMAND ................................................................... ................................80 9.1.22 FORWARD SRNS CONTEXT....................................................................... ...........................................80 9.1.23 PAGING ........................................................ .......................................................... ...................................81 9.1.24 COMMON ID................. ............................................................ ...................................................... ..........81 9.1.25 CN INVOKE TRACE .................................................... .......................................................... ..................82 9.1.26 SECURITY MODE COMMAND.......... ................................................................. ...................................82 9.1.27 SECURITY MODE COMPLETE .................................................... .......................................................... 82 9.1.28 SECURITY MODE REJECT........................................................... ......................................................... .83 9.1.29 LOCATION REPORTING CONTROL..... ........................................................... .....................................83 9.1.30 LOCATION REPORT.................................. ........................................................ ......................................83 9.1.31 DATA VOLUME REPORT REQUEST ................................................................. ...................................84 9.1.32 DATA VOLUME REPORT....................................................... ....................................................... .........84 9.1.33 INITIAL UE MESSAGE........................................................... ....................................................... ..........85 9.1.34 DIRECT TRANSFER...................................................... ......................................................... ..................85 9.1.35 CN INFORMATION BROADCAST REQUEST ...................................................................... ................86 9.1.36 CN INFORMATION BROADCAST CONFIRM...................... ................................................................ 86 9.1.37 CN INFORMATION BROADCAST REJECT....................... .................................................................. .86 9.1.38 OVERLOAD ................................................ ....................................................... .......................................86 9.1.39 RESET .......................................................... ......................................................... .....................................86 9.1.40 RESET ACKNOWLEDGE ........................................................ ....................................................... .........86 9.1.41 ERROR INDICATION........................................... ........................................................ ............................87 9.1.42 CN DEACTIVATE TRACE.................................................................. .................................................... .87 9.1.43 RANAP RELOCATION INFORMATION......................................................... .......................................87 9.1.44 RESET RESOURCE .................................................... ............................................................ ..................88 9.1.45 RESET RESOURCE ACKNOWLEDGE ............................................................... ...................................90 9.1.46 RAB MODIFY REQUEST .................................................. ............................................................. .........90 9.1.47 LOCATION RELATED DATA REQUEST .............................................................. ................................91 9.1.48 LOCATION RELATED DATA RESPONSE ....................................................... .....................................91 9.1.49 LOCATION RELATED DATA FAILURE ................................................. ..............................................92 9.1.50 INFORMATION TRANSFER INDICATION...................... ............................................................ .........92 9.1.51 INFORMATION TRANSFER CONFIRMATION............................................ ........................................92 9.1.52 INFORMATION TRANSFER FAILURE ............................................................. ....................................92 9.1.53 UE SPECIFIC INFORMATION INDICATION................... ................................................................. ....93 9.2 Information Element Definitions............................. ............................................................... ..........................93 9.2.0 General........................................................................................................................................................93 9.2.1 Radio Network Layer Related IEs................................................ ............................................................. .93

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9.2.1.1 Message Type ..................................................... ....................................................... ...........................93 9.2.1.2 RAB ID ........................................... ................................................. .....................................................94 9.2.1.3 RAB Parameters...................... .................................................... ......................................................... .95 9.2.1.4 Cause...................................................................................................................................................100 9.2.1.5 CN Domain Indicator ............................................... ........................................................... ................108 9.2.1.6 Trace Type ................................................ ....................................................... ...................................108

9.2.1.7 Trigger ID ............................................... ........................................................ ....................................108 9.2.1.8 Trace Reference ............................................... ........................................................ ...........................108 9.2.1.9 UE Identity........................................................ ........................................................ ..........................109 9.2.1.10 OMC ID .................................................... ........................................................ ..................................109 9.2.1.11 Integrity Protection Information................................................... ...................................................... .110 9.2.1.12 Encryption Information ................................................... ............................................................ ........110 9.2.1.13 Chosen Integrity Protection Algorithm ............................................................ ...................................110 9.2.1.14 Chosen Encryption Algorithm ...................................................... ..................................................... .110 9.2.1.15 Categorisation Parameters................. ....................................................... ...........................................111 9.2.1.16 Request Type................................... .................................................... ................................................111 9.2.1.17 Data Volume Reporting Indication ..................................................... ................................................111 9.2.1.18 User Plane Mode.................................................. ...................................................... .........................111 9.2.1.19 UP Mode Versions ........................................................ ...................................................... ................112 9.2.1.20 Chosen UP Version .................................................. ........................................................... ................112 9.2.1.21 Paging Area ID......................................... .................................................... .......................................112 9.2.1.22 Non Searching Indication...................... ........................................................... ...................................112 9.2.1.23 Relocation Type ............................................... .......................................................... .........................113 9.2.1.24 Source ID ................................................. ........................................................ ...................................113 9.2.1.25 Target ID.................................................. ........................................................ ...................................113 9.2.1.26 MS Classmark 2 ........................................................ ......................................................... .................114 9.2.1.27 MS Classmark 3 ........................................................ ......................................................... .................114 9.2.1.28 Source RNC to Target RNC Transparent Container ................................................................ ...........114 9.2.1.29 Old BSS to New BSS Information ............................................................. .........................................118 9.2.1.30 Target RNC to Source RNC Transparent Container ................................................................ ...........118 9.2.1.31 L3 Information .................................................... ....................................................... .........................118 9.2.1.32 Number of Steps....................................... ........................................................ ...................................119 9.2.1.33 DL N-PDU Sequence Number...................................................... ...................................................... 119 9.2.1.34 UL N-PDU Sequence Number...................................................... ...................................................... 119 9.2.1.35 Criticality Diagnostics..................................... ................................................................... .................119 9.2.1.36 Key Status ....................................................... .......................................................... ..........................121 9.2.1.37 DRX Cycle Length Coefficient............ ........................................................ .......................................121 9.2.1.38 Iu Signalling Connection Identifier ...................................................... ...............................................121 9.2.1.39 Global RNC-ID................................................ .................................................... ...............................121 9.2.1.40 PDP Type Information ............................................... ......................................................... ................122 9.2.1.41 Service Handover .................................................... ........................................................... .................122 9.2.1.42 Message Structure ................................................... ........................................................... .................123 9.2.1.43 Alternative RAB Parameter Values .................................................. ..................................................124 9.2.1.44 Assigned RAB Parameter Values .............................................. ......................................................... 125 9.2.1.45 Requested RAB Parameter Values.................... .................................................... ..............................125 9.2.1.46 Global CN-ID................................ ........................................................ ..............................................126 9.2.1.46a Vertical Accuracy Code ..................................................... ......................................................... ........126 9.2.1.46b Response Time ........................................... ................................................. ........................................127 9.2.1.46c Positioning Priority .......................................................... .......................................................... .........127 9.2.1.46d Client Type............................. ........................................................ ................................................... ..127 9.2.1.47 New BSS to Old BSS Information ............................................................. .........................................127 9.2.1.48 Inter-System Information Transparent Container .................................................... ...........................128 9.2.1.49 Cell Load Information.......... ....................................................... ........................................................ 128 9.2.1.50 Cell Capacity Class Value.................... ................................................................. ..............................128 9.2.1.51 Load Value....................................................... ......................................................... ..........................128 9.2.1.52 RT Load Value............ ....................................................... ........................................................ .........129 9.2.1.53 NRT Load Information Value ..................................................... ....................................................... .129 9.2.1.54 Source RNC PDCP context info ...................................................... ................................................... 129 9.2.1.55 Information Transfer ID ........................................................ ...................................................... ........129 9.2.1.56 Provided Data........................................... ....................................................... ....................................129 9.2.1.57 GERAN Classmark ....................................................... ...................................................... ................130 9.2.1.58 GERAN BSC Container........................... .................................................... .......................................130

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9.2.1.59 UESBI-Iu ............................................... .................................................... .........................................130 9.2.1.60 Cell Load Information Group............................ ........................................................ ..........................131 9.2.1.61 Source Cell Identifier ............................................................... .................................................. .........131 9.2.2 Transport Network Layer Related IEs ..................................................... ................................................ .132 9.2.2.1 Transport Layer Address......................... ....................................................... .....................................132 9.2.2.2 Iu Transport Association.......................................................... .................................................. .........133

9.2.2.3 DL GTP-PDU Sequence Number ......................................................... ..............................................133 9.2.2.4 UL GTP-PDU Sequence Number ......................................................... ..............................................133 9.2.3 NAS Related IEs....................................................... ............................................................... .................133 9.2.3.1 Permanent NAS UE Identity .......................................................... .................................................... .133 9.2.3.2 Temporary UE ID ............................................... .................................................... ............................134 9.2.3.3 Paging Cause................. .................................................... ......................................................... .........134 9.2.3.4 NAS Broadcast Information................... ................................................................. ............................135 9.2.3.5 NAS PDU..................................... ........................................................... ............................................135 9.2.3.6 LAI......................................................................................................................................................135 9.2.3.7 RAC ............................................... .................................................... .................................................136 9.2.3.8 SAPI....................................................................................................................................................136 9.2.3.9 SAI ................................................. ........................................................ .............................................136 9.2.3.10 Area Identity ....................................................... ...................................................... ..........................137 9.2.3.11 Geographical Area .................................................. ........................................................... .................137 9.2.3.12 Unsuccessfully Transmitted Data Volume......... ........................................................... ......................140 9.2.3.13 Data Volume Reference .................................................... ......................................................... .........140 9.2.3.14 Information Identity ................................................. .......................................................... .................140 9.2.3.15 Information Priority .................................................. ......................................................... .................141 9.2.3.16 Information Control ................................................... ........................................................ .................141 9.2.3.17 CN Broadcast Area ................................................ ..................................................... ........................141 9.2.3.18 NAS Synchronisation Indicator .......................................................... ................................................141 9.2.3.19 Location Related Data Request Type......................................................... .........................................141 9.2.3.20 Broadcast Assistance Data Deciphering keys .................................................... .................................142 9.2.3.21 Requested GPS Assistance Data ................................................................ .........................................142 9.2.3.22 Last Known Service Area ............................................... ............................................................ ........142 9.2.3.23 Shared Network Information.................... ............................................................ ...............................142 9.2.3.24 SNA Access Information ...................................................... ...................................................... ........143 9.2.3.25 SNAC..................................................................................................................................................144 9.2.3.26 Location Related Data Request Type Specific To GERAN Iu Mode ................................................. 144 9.2.3.27 Position Data ........................................................... ........................................................... .................145 9.2.3.28 Position Data Specific To GERAN Iu Mode ....................................................... ...............................147 9.3 Message and Information Element Abstract Syntax (with ASN.1) ................................................................ 148 9.3.0 General......................................................................................................................................................148 9.3.1 Usage of private message mechanism for non-standard use................... .................................................. 148 9.3.2 Elementary Procedure Definitions........................................................ .................................................... 148 9.3.3 PDU Definitions ........................................................... ........................................................... .................157 9.3.4 Information Element Definitions .................................................... ......................................................... .196 9.3.5 Common Definitions...................................................... .......................................................... .................221 9.3.6 Constant Definitions ................................................................... ..................................................... .........222 9.3.7 Container Definitions............................... ............................................................ .....................................226 9.4 Message Transfer Syntax ...................................................... ........................................................ .................230 9.5 Timers ........................................................ ............................................................ ........................................230

10 Handling of Unknown, Unforeseen and Erroneous Protocol Data ......................................................231 10.1 General ...................................................... ............................................................ .........................................231 10.2 Transfer Syntax Error ..................................................... ...................................................... ..........................231 10.3 Abstract Syntax Error .................................................. ......................................................... ..........................232 10.3.1 General......................................................................................................................................................232 10.3.2 Criticality Information ............................................................. ........................................................ .........232 10.3.3 Presence Information ....................................................... ........................................................ .................233 10.3.4 Not comprehended IE/IE group .................................................... .................................................... ........233 10.3.4.1 Procedure Code .................................................... ...................................................... .........................233

10.3.4.1A Type of Message .................................................. ...................................................... .........................233 10.3.4.2 IEs other than the Procedure Code and Type of Message............ .................................................... ...234 10.3.5 Missing IE or IE group .............................................. ...................................................... .........................235 10.3.6 IEs or IE groups received in wrong order or with too many occurrences or erroneously present ............236

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10.4 Logical Error .......................................................... ..................................................... ...................................236 10.5 Exceptions .......................................................... ......................................................... ...................................237

11 Special Procedures for RNC to RNC Communication.........................................................................237 11.1 General ...................................................... ............................................................ .........................................237 11.2 RANAP Relocation Information ............................................................ ....................................................... .237 11.2.1 General......................................................................................................................................................237 11.2.2 Operation ................................................... ........................................................ .......................................238

Annex A (informative): RANAP guidelines .......................................................................................239 A.1 Rules for building RANAP messages .................................................. .......................................................... 239 A.1.1 Rules for RANAP messages that shall contain the CN Domain Indicator IE... ........................................239 A.2 Guidelines for Usage of the Criticality Diagnostics IE ..................................................................... .............239 A.2.1 EXAMPLE MESSAGE Layout............................. ............................................................ .......................239 A.2.2 Example on a Received EXAMPLE MESSAGE ......................................................... ............................240 A.2.3 Content of Criticality Diagnostics ...................................................................... ......................................241 A.2.3.1 Example 1 ............................................... ........................................................ ....................................241 A.2.3.2 Example 2 ............................................... ........................................................ ....................................242 A.2.3.3 Example 3 ............................................... ........................................................ ....................................243 A.2.3.4 Example 4 ............................................... ........................................................ ....................................244 A.2.3.5 Example 5 ............................................... ........................................................ ....................................245 A.2.4 ASN.1 of EXAMPLE MESSAGE.............. ............................................................ ..................................246

Annex B (informative): Change history .............................................................................................249

History ............................................................................................................................................................253

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ForewordThis Technical Specification (TS) has been produced by the 3 rd Generation Partnership Project (3GPP).

The contents of the present document are subject to continuing work within the TSG and may change following formalTSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with anidentifying change of release date and an increase in version number as follows:

Version x.y.z

where:

x the first digit:

1 presented to TSG for information;

2 presented to TSG for approval;

3 or greater indicates TSG approved document under change control.

y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections,updates, etc.

z the third digit is incremented when editorial only changes have been incorporated in the document.

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1 ScopeThe present document specifies the radio network layer signalling protocol called Radio Access Network ApplicationPart (RANAP) for the Iu interface. RANAP supports the functions of Iu interface by signalling procedures defined in

this document. RANAP is developed in accordance to the general principles stated in [1], [2] and [3].

2 ReferencesThe following documents contain provisions which, through reference in this text, constitute provisions of the presentdocument.

References are either specific (identified by date of publication, edition number, version number, etc.) ornon-specific.

For a specific reference, subsequent revisions do not apply.

For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (includinga GSM document), a non-specific reference implicitly refers to the latest version of that document in the same

Release as the present document .

[1] 3GPP TR 23.930 (version.4.0.0, 2001-04): "Iu Principles".

[2] 3GPP TS 25.410: "UTRAN Iu Interface: General Aspects and Principles".

[3] 3GPP TS 25.401: "UTRAN Overall Description".

[4] 3GPP TR 25.931: "UTRAN Functions, Examples on Signalling Procedures".

[5] 3GPP TS 25.412: "UTRAN Iu interface signalling transport".

[6] 3GPP TS 25.415: "UTRAN Iu interface user plane protocols".

[7] 3GPP TS 23.107: "Quality of Service (QoS) concept and architecture".

[8] 3GPP TS 24.008: "Mobile radio interface layer 3 specification; Core network protocols; Stage 3".

[9] 3GPP TS 25.414: "UTRAN Iu interface data transport and transport signalling".

[10] 3GPP TS 25.331: Radio Resource Control (RRC) protocol specification".

[11] 3GPP TS 48.008: "Mobile Switching Centre Base Station System (MSC - BSS) interface; Layer3 specification".

[12] GSM TS 12.08: "Subscriber and equipment trace".

[13] ITU-T Recommendation X.691 (1997): "Information technology - ASN.1 encoding rules:Specification of Packed Encoding Rules (PER)".

[14] ITU-T Recommendation X.680 (1997): "Information technology - Abstract Syntax Notation One(ASN.1): Specification of basic notation".

[15] ITU-T Recommendation X.681 (1997): "Information technology - Abstract Syntax Notation One(ASN.1): Information object specification".

[16] 3GPP TS 23.110: "UMTS Access Stratum, Services and Functions".

[17] 3GPP TS 25.323: "Packet Data Convergence Protocol (PDCP) specification".

[18] 3GPP TR 25.921: "Guidelines and principles for protocol description and error handling".

[19] 3GPP TS 23.003: "Numbering, addressing and identification".

[20] 3GPP TS 23.032: "Universal Geographical Area Description (GAD)".

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[21] 3GPP TS 23.060: "General Packet Radio Service (GPRS); Service description; Stage 2".

[22] 3GPP TS 24.080: "Mobile radio Layer 3 supplementary services specification; Formats andcoding".

[23] 3GPP TS 29.108: "Application of the Radio Access Network Application Part (RANAP) on theE-interface".

[24] 3GPP TS 29.002: "Mobile Application Part (MAP) specification".

[25] GSM TS 12.20: "Base Station System (BSS) management information".

[26] 3GPP TS 23.236: "Intra-domain connection of Radio Access Network (RAN) nodes to multipleCore Network (CN) nodes".

[27] 3GPP TS 43.051: "3rd Generation Partnership Project; Technical Specification GroupGSM/EDGE Radio Access Network; Overall description - Stage 2".

[28] 3GPP TS 25.305: "Stage 2 Functional Specification of Location Services (LCS) in UTRAN".

[29] 3GPP TS 43.059: "Functional stage 2 description of Location Services (LCS) in GERAN".

[30] 3GPP TS 22.071: "Location Services (LCS); Service description - Stage 1".

[31] 3GPP TR 25.994: "Measures employed by the UMTS Radio Access Network (UTRAN) toovercome early User Equipment (UE) implementation faults".

[32] 3GPP TR 25.995: "Measures employed by the UMTS Radio Access Network (UTRAN) to caterfor legacy User Equipment (UE) which conforms to superseded versions of the RAN interfacespecification".

[33] 3GPP TS 23.195: "Provision of UE Specific Behaviour Information to Network Entities".

[34] 3GPP TS 49.031: "Location Services (LCS) Base Station System Application Part LCSExtension (BSSAP-LE)".

[35] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications".

3 Definitions, symbols and abbreviations

3.1 DefinitionsFor the purposes of the present document, the following terms and definitions below apply. Terms and definitions notdefined below can be found in [35].

Cell Load-Based Inter-System Handover: This mechanism, which is contained within a UTRAN RNC, consists of three primary functions:

1. The RNC has the capability to generate and send Cell Load Information towards the target/source system.

2. The RNC has the capability to receive Cell Load Information from the target/source system, and is able tointerpret this information.

3. The ability of the RNC to make a handover decision by comparing the Cell Load Information that it has receivedfrom the target system with the Cell Load Information it has about its own cells.

Ciphering Alternative: defines both the Ciphering Status (started/not started) together with the Ciphering Algorithmconsidered altogether .

Default CN node : An RNC with an inactive or not implemented NAS Node Selection Function [26] has one singlepermanent default CN node per CN domain. It always initiates the Initial UE Message procedure towards its default CNnode. If the NAS Node Selection Function is active, then no Default CN node exists.

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Directed retry : Directed retry is the process of assigning a User Equipment to a radio resource that does not belong tothe serving RNC e.g. in situations of congestion. It is triggered by the RAB Assignment procedure and employsrelocation procedures.

Elementary Procedure: RANAP protocol consists of Elementary Procedures (EPs). An Elementary Procedure is a unitof interaction between the RNS and the CN. These Elementary Procedures are defined separately and are intended to be

used to build up complete sequences in a flexible manner. If the independence between some EPs is restricted, it isdescribed under the relevant EP description. Unless otherwise stated by the restrictions, the EPs may be invokedindependently of each other as stand alone procedures, which can be active in parallel. Examples on using severalRANAP EPs together with each other and EPs from other interfaces can be found in reference [4].

An EP consists of an initiating message and possibly a response message. Three kinds of EPs are used:

- Class 1: Elementary Procedures with response (success and/or failure).

- Class 2: Elementary Procedures without response.

- Class 3: Elementary Procedures with possibility of multiple responses.

For Class 1 EPs, the types of responses can be as follows:

Successful:

- A signalling message explicitly indicates that the elementary procedure successfully completed with thereceipt of the response.

Unsuccessful:

- A signalling message explicitly indicates that the EP failed.

- On time supervision expiry (i.e. absence of expected response).

Successful and Unsuccessful:

- One signalling message reports both successful and unsuccessful outcome for the different included requests.The response message used is the one defined for successful outcome.

Class 2 EPs are considered always successful.

Class 3 EPs have one or several response messages reporting both successful, unsuccessful outcome of the requests andtemporary status information about the requests. This type of EP only terminates through response(s) or EP timerexpiry.

GERAN BSC in Iu mode: In the context of this specification no distinction between an UTRAN RNC and a GERANBSC in Iu mode is made. The GERAN BSC in Iu mode will behave as a RNC unless explicitely stated (see [27]).

Integrity Protection Alternative: defines both the Integrity Protection Status (started/not started) together with theIntegrity Protection Algorithm considered altogether .

PUESBINE feature: as defined in [33].

Relocation of SRNS: relocation of SRNS is a UMTS functionality used to relocate the serving RNS role from one RNSto another RNS. This UMTS functionality is realised by several elementary procedures executed in several interfacesand by several protocols and it may involve a change in the radio resources used between UTRAN and UE

It is also possible to relocate the serving RNS role from:

- one RNS within UMTS to another relocation target external to UMTS;

- functionality equivalent to the serving RNS role from another relocation source external to UMTS to anotherRNS.

Serving RNC: SRNC is the RNC belonging to SRNS

Serving RNS: role an RNS can take with respect to a specific connection between an UE and UTRAN. There is oneserving RNS for each UE that has a connection to UTRAN. The serving RNS is in charge of the radio connectionbetween a UE and the UTRAN. The serving RNS terminates the Iu for this UE

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Source RNC: source RNC is the RNC belonging to source RNS

Source RNS: role, with respect to a specific connection between UTRAN and CN, that RNS takes when it decides toinitiate a relocation of SRNS

Target RNC: target RNC is the RNC belonging to target RNS

Target RNS: role an RNS gets with respect to a specific connection between UTRAN and CN when it is being asubject of a relocation of SRNS which is being made towards that RNS

UE Specific Behaviour Information Iu: as defined in [33].

3.2 SymbolsVoid.

3.3 Abbreviations

Applicable abbreviations can be found in [35]. For the purposes of the present document, the following abbreviationsapply:

AAL2 ATM Adaptation Layer type 2ALCAP Access Link Control Application PartAS Access StratumASN.1 Abstract Syntax Notation OneATM Asynchronous Transfer ModeBSC Base Station ControllerCC Call ControlCN Core Network CRNC Controlling RNCCS Circuit Switched

DCH Dedicated ChannelDL Downlink DRNC Drift RNCDRNS Drift RNSDSCH Downlink Shared ChannelEP Elementary ProcedureGERAN GSM/EDGE Radio Access Network GPRS General Packet Radio SystemGSM Global System for Mobile communicationsGTP GPRS Tunnelling ProtocolIE Information ElementIMEI International Mobile Equipment IdentityIMSI International Mobile Subscriber Identity

IPv4 Internet Protocol (version 4)IPv6 Internet Protocol (version 6)MM Mobility ManagementMSC Mobile services Switching CenterNAS Non Access StratumNNSF NAS Node Selection FunctionNRT Non-Real TimeN-PDU Network Protocol Data UnitOSP:IHOSS Octet Stream Protocol: Internet-Hosted Octet Stream ServiceP-TMSI Packet TMSIPDCP Packet Data Convergence ProtocolPDP Packet Data ProtocolPDU Protocol Data Unit

PLMN Public Land Mobile Network PPP Point-to-Point ProtocolPS Packet SwitchedPUESBINE Provision of UE Specific Behaviour Information to Network Entities

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QoS Quality of ServiceRAB Radio Access BearerRANAP Radio Access Network Application PartRNC Radio Network ControllerRNS Radio Network SubsystemRRC Radio Resource Control

RT Real TimeSAI Service Area IdentifierSAP Service Access PointSDU Service Data UnitSGSN Serving GPRS Support NodeSNA Shared Network AreaSNAC Shared Network Area CodeSRNC Serving RNCSRNS Serving RNSTEID Tunnel Endpoint IdentifierTMSI Temporary Mobile Subscriber IdentityUE User EquipmentUEA UMTS Encryption Algorithm

UESBI-Iu UE Specific Behaviour Information - IuUIA UMTS Integrity AlgorithmUL Uplink UMTS Universal Mobile Telecommunications SystemUSCH Uplink Shared ChannelUTRAN UMTS Terrestrial Radio Access Network

4 General

4.1 Procedure Specification PrinciplesThe principle for specifying the procedure logic is to specify the functional behaviour of the RNC exactly andcompletely. The CN functional behaviour is left unspecified. The EPs Relocation Preparation, Reset, Reset Resourceand Overload Control are exceptions from this principle.

The following specification principles have been applied for the procedure text in clause 8:

- The procedure text discriminates between:

1) Functionality which "shall" be executed

The procedure text indicates that the receiving node "shall" perform a certain function Y under a certaincondition. If the receiving node supports procedure X but cannot perform functionality Y requested in theREQUEST message of a Class 1 of Class 3 EP, the receiving node shall respond with the message used toreport unsuccessful outcome for this procedure, containing an appropriate cause value.

2) Functionality which "shall, if supported" be executed

The procedure text indicates that the receiving node "shall, if supported," perform a certain function Y undera certain condition. If the receiving node supports procedure X, but does not support functionality Y, thereceiving node shall proceed with the execution of the EP, possibly informing the requesting node about thenot supported functionality.

- Any required inclusion of an optional IE in a response message is explicitly indicated in the procedure text. If theprocedure text does not explicitly indicate that an optional IE shall be included in a response message, theoptional IE shall not be included. For requirements on including Criticality Diagnostics IE, see section 10. Forexamples on how to use the Criticality Diagnostics IE, see Annex A.2.

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4.2 Forwards and Backwards CompatibilityThe forwards and backwards compatibility of the protocol is assured by mechanism where all current and futuremessages, and IEs or groups of related IEs, include ID and criticality fields that are coded in a standard format that willnot be changed in the future. These parts can always be decoded regardless of the standard version.

4.3 Specification NotationsFor the purposes of the present document, the following notations apply:

Procedure When referring to an elementary procedure in the specification the Procedure Name is written withthe first letters in each word in upper case characters followed by the word "procedure", e.g. RABAssignment procedure.

Message When referring to a message in the specification the MESSAGE NAME is written with all lettersin upper case characters followed by the word "message", e.g. RAB ASSIGNMENT REQUESTmessage.

IE When referring to an information element (IE) in the specification the Information Element Name is written with the first letters in each word in upper case characters and all letters in Italic fontfollowed by the abbreviation "IE", e.g. User Plane Mode IE.

Value of an IE When referring to the value of an information element (IE) in the specification the "Value" iswritten as it is specified in subclause 9.2 enclosed by quotation marks, e.g. "Abstract Syntax Error(Reject)" or "Geographical Coordinates".

5 RANAP ServicesRANAP provides the signalling service between UTRAN or GERAN (in Iu mode) and CN that is required to fulfil the

RANAP functions described in clause 7. RANAP services are divided into three groups based on Service Access Points(SAP) defined in [16]:

1. General control services: They are related to the whole Iu interface instance between RNC and logical CNdomain, and are accessed in CN through the General Control SAP. They utilise connectionless signallingtransport provided by the Iu signalling bearer.

2. Notification services: They are related to specified UEs or all UEs in specified area, and are accessed in CNthrough the Notification SAP. They utilise connectionless signalling transport provided by the Iu signallingbearer.

3. Dedicated control services: They are related to one UE, and are accessed in CN through the Dedicated ControlSAP. RANAP functions that provide these services are associated with Iu signalling connection that ismaintained for the UE in question. The Iu signalling connection is realised with connection oriented signallingtransport provided by the Iu signalling bearer.

6 Services Expected from Signalling TransportSignalling transport (See [5]) shall provide two different service modes for the RANAP.

1. Connection oriented data transfer service. This service is supported by a signalling connection between RNC andCN domain. It shall be possible to dynamically establish and release signalling connections based on the need.Each active UE shall have its own signalling connection. The signalling connection shall provide in sequencedelivery of RANAP messages. RANAP shall be notified if the signalling connection breaks.

2. Connectionless data transfer service. RANAP shall be notified in case a RANAP message did not reach theintended peer RANAP entity.

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7 Functions of RANAPRANAP protocol has the following functions:

- Relocating serving RNC. This function enables to change the serving RNC functionality as well as the related Iuresources (RAB(s) and Signalling connection) from one RNC to another.

- Overall RAB management. This function is responsible for setting up, modifying and releasing RABs.

- Queuing the setup of RAB. The purpose of this function is to allow placing some requested RABs into a queue,and indicate the peer entity about the queuing.

- Requesting RAB release. While the overall RAB management is a function of the CN, the RNC has thecapability to request the release of RAB.

- Release of all Iu connection resources. This function is used to explicitly release all resources related to one Iuconnection.

- Requesting the release of all Iu connection resources. While the Iu release is managed from the CN, the RNC hasthe capability to request the release of all Iu connection resources from the corresponding Iu connection.

- SRNS context forwarding function. This function is responsible for transferring SRNS context from the RNC tothe CN for intersystem change in case of packet forwarding.

- Controlling overload in the Iu interface. This function allows adjusting the load in the control plane of the Iuinterface.

- Resetting the Iu. This function is used for resetting an Iu interface.

- Sending the UE Common ID (permanent NAS UE identity) to the RNC. This function makes the RNC aware of the UE's Common ID.

- Paging the user. This function provides the CN for capability to page the UE.

- Controlling the tracing of the UE activity. This function allows setting the trace mode for a given UE. Thisfunction also allows the deactivation of a previously established trace.

- Transport of NAS information between UE and CN (see [8]). This function has two sub-classes:

1. Transport of the initial NAS signalling message from the UE to CN. This function transfers transparently theNAS information. As a consequence also the Iu signalling connection is set up.

2. Transport of NAS signalling messages between UE and CN, This function transfers transparently the NASsignalling messages on the existing Iu signalling connection. It also includes a specific service to handlesignalling messages differently.

- Controlling the security mode in the UTRAN. This function is used to send the security keys (ciphering andintegrity protection) to the UTRAN, and setting the operation mode for security functions.

- Controlling location reporting. This function allows the CN to operate the mode in which the UTRAN reportsthe location of the UE.

- Location reporting. This function is used for transferring the actual location information from RNC to the CN.

- Data volume reporting function. This function is responsible for reporting unsuccessfully transmitted DL datavolume over UTRAN for specific RABs.

- Reporting general error situations. This function allows reporting of general error situations, for which functionspecific error messages have not been defined.

- Location related data. This function allows the CN to either retrieve from the RNC deciphering keys (to beforwarded to the UE) for the broadcast assistance data, or request the RNC to deliver dedicated assistance data tothe UE.

- Information Transfer. This function allows the CN to transfer information to the RNC.

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These functions are implemented by one or several RANAP elementary procedures described in the following clause.

8 RANAP Procedures

8.1 Elementary ProceduresIn the following tables, all EPs are divided into Class 1, Class 2 and Class 3 EPs (see subclause 3.1 for explanation of the different classes):

Table 1: Class 1

Successful Outcome Unsuccessful OutcomeElementaryProcedure

InitiatingMessage Response message Response message

Iu Release IU RELEASECOMMAND

IU RELEASE COMPLETE

RelocationPreparation

RELOCATIONREQUIRED

RELOCATION COMMAND RELOCATIONPREPARATION FAILURE

RelocationResourceAllocation

RELOCATIONREQUEST

RELOCATION REQUESTACKNOWLEDGE

RELOCATION FAILURE

RelocationCancel

RELOCATIONCANCEL

RELOCATION CANCELACKNOWLEDGE

SRNS ContextTransfer

SRNS CONTEXTREQUEST

SRNS CONTEXTRESPONSE

Security ModeControl

SECURITYMODECOMMAND

SECURITY MODECOMPLETE

SECURITY MODE REJECT

Data VolumeReport

DATA VOLUMEREPORTREQUEST

DATA VOLUME REPORT

Reset RESET RESET ACKNOWLEDGE

Reset Resource RESETRESOURCE

RESET RESOURCEACKNOWLEDGE

Location relatedData

LOCATIONRELATED DATAREQUEST

LOCATION RELATEDDATA RESPONSE

LOCATION RELATED DATAFAILURE

InformationTransfer

INFORMATIONTRANSFERINDICATION

INFORMATION TRANSFERCONFIRMATION

INFORMATION TRANSFERFA

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